The top naval commander for Iran's Revolutionary Guard, Rear Admiral Ali Fadavi, has told the Tasnim news agency that an internal investigation found a broken navigation system was to blame for leading two U.S. Navy patrol boats into Iranian waters. The vessels and 10 sailors were seized by Iran on January 12. The U.S. Department of Defense has released file video showing the type of Navy boats that were seized. (U.S. Department of Defense file, Reuters)